Car wheel



E. LATSHAW Nov. 3, 1936.

-CAR WHEEL Filed July ll, 1935 whm/ . patented Nuev. 3, i936;

"NiTsp .STATES- aosiifzs oAn. WHEEL t Eimerl Latshaw. philadelphia, im., assignor. to

l J. G. Brill Company, lPeip poration of Pennsylvania i f v f 2 el. tot., 2st-in v 'tion between the tire and hub portion for the col- The present invention relates. tok car wheels in general and in particular to railway icar wheels in which the tread portion is movably coupled to the hub tion. i Y It 'is an object ofthe invention to provide. a '5, wheel in which disks of resilient material are interposed between the tread and hub 'portionsl and actin shear to absorb vibration. l llt is another object ofthe invention to provide a wheel having a tread portion resiliently coupledto the hub and equipped with fully protected, yet re i i i removable currentshunts. g j

ll is another object of the invention to provide a wheel having a resilient disk so formed 'as to givesubstantially uniform compression over '15 the entire area when clamped by the wheel parts.

These and other objects will loe-apparent toer one skilled in the art from a study "of the followdescriptionwhen taken in conjunction4 wit the. accompanying drawing in' which: 2o #Figure l. is-an elevational view of a'car wheel.' parts'being broken away to n iorei'ully show the relation of itheiwheelelements;

Fig. 2 is a sectional view taken on line 2 2 of vFig. l;.and

:es Fig. 3 is a. sectional view of the portion qi the lspecial' resilient disk. f Y n Referring now to the drawing it is seen-thai', the wheel is formed with a tire poitin 2 having the usual flange l andtread portion Swhich is 30 .reenforced by web portionfafextending inwardly .a -Irom the tire portion substantially in alignment Y withthe center of'pressureof the tire when in f use; The web portiom terminates' at l0, thus leaving atlarge central opening. or bore in what would otherwise be a solid disk wheel.l

The ycentral or. hubl .portion of the\wheel is' formed by two'identical halves, each o fwhich is formed with a central opening' I2 adaptedto havea press tit on the car-axle. and with-a. radially extending. platell having an'oil'set I'Btherein,- I thereby forming vroilset plate portions ,IB and 20. Theinner plate portions I8 are adapted 'to lhave abutting relation when assembled, while' the. outer plate portions WiIlbespaced a ksuitable 5 predetermined amount to receive the resilient material and web`ofthe tire. Radially extend-.-

ing bracing ribs 22 are arranged in pairs to suit- 'ably brace the plateportions, andare 'so spaced as to permltpassageof bolts 24 throughsuitable holes formed in the plate "portionl 8.v The bolt heads may be provided .with a plane portion 26 1 55 In order to provide positive electrical'connec-l PAENTJ oFF@A liat. a corvoL 30,801

- of phosphor bronze or other material which extends through small holes or openings it in the resilient disks and contacts with the web ofthe tire. It is intended that the slight relative movement oi the web and plate will be absorbed by thetil oi the spring, but if the movementv is excessive or for otherreasons it is deemed desirable, then ya slide block may be inserted to press against thetire web.

'resilientdisks t2', which in the instance shownl are of rubber, .although they may be formed of other material having the ypro r characteristics; are formed with the outer edge it and the inner edge ifll'Y of slightly greater thickness lthan the intermediate'portion ltd. The inner edge oi the disk isprovided witha central projection 5t having an edge 52, thereby providing an opening of exactly the same Vsize-as the onset i6 on the hub` portion, thereby properly positioning the disks and at the same time providing space into which the Vi'ubb'ermay move when. stressed." Thev increased thickness of the disks is necessary in order that theentire disk may be uniformly loaded under the compression exerted by the clanping bolts, for' without" this increased thick` ness' the rubber tends to flow away andthe edges l Aheavily stressed than the inner practice-fan initialhighcompression of several thousand pounds is placed on the rubber by the bolts, which bolts will be relieved' vslightly oi their strain when the. wheel is pressed on the axle in -theusual manner. It is seen that the tire is' rinly gripped by the rubber elements without'vulcanizing and'that any shocks on the 1 tire` are absorbed bythe rubber acting in shear. rather than in compression as 1s customaryrand also' that due to the slight clearance between the web and onset that the extent of this movement is limited' even ii.' the rubber should faili g.

Although Vonly one form ofswheel andi-'resilient .disk has been'descrlbed, it isobvious that other modifications and arrangement of parts are pos:

sible construction byone skilled iii/theartd Y or reduced area to provide a limitedspace in without departing from the scope of the appended claims. ,f

What is claimed is:

l. In a car wheel, a tire portion having an inwardly extending web; a pair of substantially identical apertured hub members disposed in abutting axial alignment, eachV of said hub members having an outwardly extending flange provided thereon in spaced substantially parallel relationship to said web, securing means extending through said hub members; pre-formed resilient means having thickened edge portions and adapted to encircle the hub portion and to substantially fill the space between the web and respective iange and be compressed under the action of said securing means, said resilient means being formed at its inner edge with a projection order to permit relative radial movement of the tire and hub; renewable electrical conductor means comprising a plug having threaded engagement with said flange; a conducting member extending through an opening in the resilient means and interposed between said plug and web, said conducting member being so formed and related to the web as to permit said radial movement.

2. In a car wheel, a tire portion having an inwardly extending web; a pair oi substantially identical apertured hub members disposed in abutting axial alignment, each of said hub mem'- bers` having an outwardly extending flange provided thereon in spaced substantially parallel re` lationship to said web, securing means extending through said hub members; pre-formed resilient means adapted to encircle the hub portion and to substantially lill the space between the web and respective ange, said resilient means having the edges thereof thickened with respect to the intermediate portion in order that the initial and maximum pressure upon the same will be exerted adjacent the edge portions under the action of the securing means.

- ELIVmR LATSHAW. 

